viviangaon

Frankly, the timing belt is very important. you should purchase the good quality timing belt.

you may clean the oil tank (carbon deposition) , don't use catalyzer now. check your throttle is clean or not. in a word, clean .

it will be caused by the fuel injector?? or ignition coil?

not sure hot to overcome your problem. but you will purchase the good & good price o2 sensor in the store http://www.aliexpress.com/fm-store/604124 you have to buy genuine ones if o2 sensor

i see. you could make your car run well shortly after the air flow meter sensor is clean. i think you may have to change the MAF sensor. you may find the cheap maf sensor on china website store, but you have to request for genuine MAF sensor.

you may check the horn alarm's wire . if it's broken, you have to connect wire by yourself. you may use the tool like rubberized fabric and scissors

it will be done if you could find the DIY paint bottle in your market. you have to paint the whole panel. can you? or try to brush it with your wife's Nail enamel. just jorking.

Check the connector wire. is it aging? usually the problem is the wire-problem